In case this happens to anyone with the same luck as me:
I connected to the drive from my windows network. The web admin page for the NAS showed zero disks. During storage, gravity managed to un-seat the SATA from the connector mounted on the case. The drives are pushed onto the connector from the rear of the chasis.
The drives were re-seated on the connectors and the system was re-started.
The NAS was immediately detected and automatically configured.